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🎧 Power up your play, stay comfy, and never miss a moment!
The KIWI design K4 Boost Battery Head Strap for Meta Quest 3/3S extends VR playtime by up to 3 hours with a lightweight, ergonomically balanced design. Featuring dual fast charging that recharges both headset and battery pack to 65% in 60 minutes, it offers a secure, adjustable fit that reduces neck and facial strain. Built with UL-certified safety components and durable materials, it’s a must-have accessory for serious VR users seeking longer, more comfortable sessions.













| ASIN | B0D4TGY2F2 |
| Additional Features | Adjustable Headband |
| Age Range Description | Teens, Adults |
| Battery Average Life | 3 hours |
| Battery Capacity | 3 hours |
| Best Sellers Rank | #1,097 in Video Games ( See Top 100 in Video Games ) #11 in Standalone Virtual Reality Accessories |
| Brand | KIWI design |
| Built-In Media | Headstrap |
| Color | White and black |
| Compatible Devices | Meta Quest 3/3S |
| Connectivity Technology | USB |
| Connector Type | USB |
| Controller Type | Knob Control |
| Customer Reviews | 4.6 out of 5 stars 2,348 Reviews |
| Display Maximum Resolution | 1832 x 1920 per eye |
| Display Resolution Maximum | 1832 x 1920 per eye |
| Display Type | LCD |
| Field Of View | 52 degrees |
| Included Components | Headstrap |
| Item Highlight | Adjustable VR Headband Accessories with Dual Charge, Extend Playtime & Reduce Facial Stress for Kids and Adults |
| Item Weight | 12.8 ounces |
| Manufacturer | Shenzhen Hongjiantou Technology Co., Ltd. |
| Mfr Part Number | QS02B |
| Model Number | QS02B |
| Number of Items | 1 |
| Operating System | Oculus Integration |
| Platform | Meta Quest |
| Resolution | 1832 x 1920 per eye |
| Sensor Technology | inside-out tracking |
| Special Feature | Adjustable Headband |
| Specific Uses For Product | Gaming |
| UPC | 850052498382 |
| Unit Count | 1 Count |
| VR Operating Platform Compatibility | Standalone |
| Warranty Description | 2 year |
C**M
Get this, you won’t regret it.
Get this. I’ll reiterate what the other reviews have stated, it is a game-changer. Literally. Ha! This is one of those items I go back on forth on because it certainly it isn’t anything I need. So I could save the money and I wonder if it will be worth it. If you use your device all the time, it is totally worth it. It fits so much better. And the extra battery life is great for when I want to exercise a bit longer. My neck doesn’t hurt. The back of my head doesn’t hurt. I feel like my head and neck are aligned. If you’re on the fence, get off of it and buy it. As for what folks said about charging, I haven’t had troubles. I honestly don’t understand the issues. I plug it in. It charges. Like anything else. I did get the 45 watt charging block as people recommended, maybe that makes the difference.
Q**E
A game changer
This is amazing, I bought this a year ago now, and it's amazing, it's a light weight design, it's comfortable, it's got a good battery life, and holds up amazing to playing games and makes it way more comfortable to play, and with the quest 3 lightweight design, having a light weight battery head strap is a game changer, 10 out of 10 would recommend, it's easily adjustable, it took like 2 minutes to setup, it hasn't broke even though I dropped it multiple times, simple to charge and easy to use, definitely should get it if your want a durable and easy to use head strap.
J**F
A complete must have for the Meta Quest
If you own a Meta Quest and you’re still using the stock headstrap that comes in the box, do yourself a favor and get this Kiwi headband. Seriously. I don’t know why Meta even bothers including that flimsy strap they ship with because it’s honestly terrible in comparison. I put up with the original strap for way too long. It was always sliding around, putting all the weight on my face, and leaving those annoying red marks on my cheeks after every session. I’d have to constantly readjust it and after maybe 30 or 40 minutes my face would start hurting and I’d have to take a break. Not exactly ideal when you’re in the middle of a game or watching something. This Kiwi headband completely changed the experience. The difference was obvious the second I put it on. Instead of all that pressure on my face, the weight is distributed way more evenly and a lot of it shifts to the top and back of my head. It sounds like a small thing but it makes a huge difference when you’re actually wearing it. Installation was pretty straightforward. Took me maybe ten minutes and I’m not particularly handy with this kind of stuff. The instructions were clear enough and everything clicked into place without any issues. No tools needed or anything like that. The build quality feels solid too. It’s got a nice rigid structure that holds its shape but there’s padding in all the right places so it doesn’t dig into your head. The back has this cushioned area that cups the back of your skull and honestly it’s just comfortable. I’ve done two hour sessions now without any discomfort which was absolutely not possible with the stock strap. The adjustment mechanism is also way better. You can dial it in to get the perfect fit and it actually stays put. With the original strap I felt like I was constantly tightening it because it would loosen up while I was playing. This one I adjust it once at the beginning and I’m good to go. My kids use the Quest too and we all have different head sizes, but it’s easy enough to adjust between users that it’s not a hassle to share. Quick twist of the dial and it fits whoever is using it. I honestly can’t believe how much better the Quest is with this headband. It went from something I’d use occasionally because it got uncomfortable to something I actually look forward to putting on. If you’re on the fence about upgrading your strap, just do it. You won’t regret it. One of the best accessories I’ve bought for my Quest hands down.
A**Y
Best quest 3 strap I have tried
I've tried this strap and the bobo vr s3 pro. This one fits me more comfortably. I have a very large head. I ended up keeping the k4 boost and giving the bobo vr strap to my son, it fits him much better than it fits me. The battery life seems sufficient with this strap and it is easy to charge the strap and the headset together. For best results you will need to buy a 45watt charging brick it is not included with the strap and the brick supplied with the headset is only 25 watts. The one conplaint I have is if you leave it plugged into the quest when you arentnusing it, it will drain the battery in the strap a little even if the headset is fully charged. There is no power button like the bobo s3 has. So you need to unplug it from the headset when the battery amd the headset have reached full charge before storage. Overall im happy woth my purchase. Its loads more comfortable than the stock strap and opens and closes to accommodate any head size.
I**A
Quality strap
Very comfortable, the battery is very nice, my only issue is that it feels slightly less secure than other elite straps but still far more secure than the original strap. It’s a little big for my head but I have a small head. Something else nice is by plugging the battery into the headset and plugging the strap into a charger you can charge both at once with one cable. If you are thinking about buying it, go for it, very durable very premium feel. Would buy again
K**E
Perfect.
DEFINITELY worth getting. Not even for longer play sessions but just ease of use and not having to charge the headset as often. But its definitely a gamechanger if youre gonna be ending up using this for virtualdesktop with your pc. The fit is perfect. No problems with connectivity, ive owned this for about a year now and its still holding up strong so durability is also a plus.
K**R
Great Head Strap, but a couple things you should know.
This head strap is fantastic. Light, comfortable and well-balanced. Very simple to assemble, and keeps it's shape/sizing once you dial it in. Great purchase, Buy with confidence. That being said....a couple things to be aware of. 1. The battery CONSTANTLY powers the headset, even when it's off. When done charging, unplug the head strap battery cable until you use the headset again. 2. If sitting back in bed, or a high backed chair you can feel the battery pack against the back of your head. It's NOT uncomfortable, but you are aware of it's presence. 3. Threading the top of the head strap thru the center opening (over eyebrows) hole is really tight. Put a piece of masking tape over the end of the Velcro and feed that thru 1st. It pulls thru in seconds. You'll save a ton of aggravation. A great headset. No regrets. Adds an hour or two to your battery life.
W**Y
Best Bang For Your Buck
This product is amazing ! May be a little more expensive than other competitors but it’s worth it!! Feels snug , comfortable and light on the head even with the built in battery pack! The life on the headset definitely helps the gameplay session last longer too ! It easily adjusts to the head as well! I have a big head and my fiancee has a much smaller one so it’s easy to adjust and fits us both perfectly ! But Now that my fiancee is getting a meta quest 3 as well I think I’m gonna have to order another one for her ! Unless Kiwi would like to send me a free one for some extra publicity ;) haha!
M**L
Cómodas para estar de pie
Cumple con todas las reseñas de YouTube, tienen una batería que amplia bastantante las horas de juego, tiene un peso equilibrado, buenos materiales y cumple con cargar las quest y el strap a la vez Pero no lo recomiendo para usarlo sentado, en mi caso después de 30 minutos me daba dolor de cuello + de espalda. Aparte de esos pequeños detalles la recomiendo bastante
P**B
Outstanding improvement on comfort
Love it! Quest 3 should come installed with a strap like this. Comfortable and well made. Makes the quest 3 feel much more balanced and comfortable to wear. The battery pack is just what I needed to extend my playing time. Overall excellent product. Will buy again for other family members.
J**K
Better than Halo strap
For me this perfect balance between comfort and stability. I like the Quest 3 original strap for stability, I can move my head around in fast games and keep a sharp sweeet spot, it does not move. But it’s awfully uncomfortable after 10 minutes. I tried a Kiwi Design H4 Halo strap, and while it’s very comfortable and fixes that issue, it introduces a new one for me as it’s so vobbly! In faster games I quickly lose my sharpness sweet spot (I use prescription inserts) because it moves around so much and it just does not feel like I get the ultimate picture quality. I am also aftraid to move my head around and that does not feel natural. Well I am glad to say this K4 Boost with battery solves both issues and is the perfect balance between comfort and stability! It’s way more comfortable than the original strap, but without sacrificing the stability! So feels much more natural than a Halo for me. Don’t belive all those ”Halo is better!” on the internet. Maybe if you are a youtuber and use it more than 8h a day, but if you are a regular user and want to get a one or two hours of gameplay after work, this is just perfect! Also battery is perfect, not a problem I can’t change them like in Bobo variants. It gives double amount of battery time and that’s plenty for me, I would never play VR more than 2 hours anyway without a break. And then you can fast charge it if you want, I have not tried fast charging but should work pretty quickly.
S**B
Must have product for metaquest 3
This is must to have product for metquest 3. Not worried about the battery backup now. I bought one pouch also from Amazon (grey colour one) , and the good lart is, with this head strap, I was able to get it inside that pouch (not that easy though). Kiwi can think of a pouch as well which suits the stap easily.
S**Y
Vergleich "Kiwi Design K4 Komfort" und KIWI Design K4 Boost Komfort"
Für meine Meta Quest 3 habe ich nach einer sinnvollen und bequemen Kopfhalterung gesucht, um das unsägliche Textilband der Basisausstattung zu ersetzen. Vom Originalzubehör des Herstellers wird in diversen Internetforen und Youtube-Videos abgeraten, weil es im freien Zubehörmarkt deutlich bessere Alternativen gibt. So bin ich bei meiner Suche auf KIWI Design gestoßen und war begeistert. Aussehen und Verarbeitung sind tadellos und fügen sich perfekt ins Erscheinungsbild der Meta Quest-Reihe ein. Auf den ersten Blick wirkt das Angebot verwirrend, denn aktuell sind sowohl die ältere Elite-Reihe als auch die gerade neu erschienene K4 Komfort-Reihe im Handel. Hauptsächlich unterscheidet sich die neue K4 Komfort-Reihe darin, dass das Verstellrad für den Kopfumfang nicht mehr wie bei der Elite-Reihe außen angesetzt, sondern im Kopfbügel integriert ist, was einen großen Vorteil darstellt, wenn man das VR-Headset im Liegen verwendet oder auch nur den Kopf im Sessel anlehnen will. Meine Empfehlung geht klar zu den neuen K4 Komfort-Modellen „KIWI Design K4 Komfort Strap“ und „KIWI Design K4 Boost Komfort Strap“ (mit Akku). Ich besitze beide und konnte sie entsprechend miteinander vergleichen. Dazu ein paar Angaben, denn die Gewichte in der Produktbeschreibung sind falsch und die Akkukapazität fehlt komplett. Das K4 hat ein Gewicht von 234g, das K4 Boost wiegt 362g, ist also trotz des Zusatzakkus nur 128g schwerer. Beim sehr angenehm zu tragenden leichteren K4 spürt man vorne immer noch ein deutliches Übergewicht, so dass der Brillenteil (Meta Quest 3 Eigengewicht 476g) durchaus nach unten gezogen wird, wenn man das Kopfband nicht zu straff anzieht. Beim K4 Boost dagegen ist die Ausgewogenheit deutlich besser, der schwere Akku im hinteren Bereich gleicht das Gewicht des Brillenteils fast aus. Man hat mehr zwar mehr Gewicht auf dem Kopf, aber ich halte es für gerade noch vertretbar. Die Akkukapazität ist in der Produktbeschreibung (Stand Anfang Oktober 2024) überhaupt nicht angegeben, weshalb ich vor dem Kauf zuerst unsicher war. Auf der Produktverpackung finden sich folgende Angaben: 2 Akkus je 2650mAh ergeben 5300mAh. (Der Vorgängermodell besaß noch einen Akku mit 6400mAh). Die Meta Quest 3 hat laut Hersteller standardmäßig einen Akku mit 4879mAh, so dass man trotzdem von einer soliden Verdopplung der Laufzeit sprechen kann. Meine Meta Quest 3 erreicht bei normaler Verwendung eine Laufzeit von 1h50min bis maximal 2h15min. Deshalb habe ich das K4 überwiegend in Verbindung mit einer Powerbank genutzt, die man sich um den Hals hängen kann. Das hat Vorteile, weil man weniger Gewicht auf dem Kopf hat und die Powerbank nur bei längeren Anwendungen einsetzt, aber auch Nachteile, weil da immer ein störendes Kabel zur Powerbank führt, das man beim Absetzen des VR-Headsets gern mal vergisst. Das K4 Boost hingegen schafft Freiheit vom Kabel, dafür hat man das zusätzliche Gewicht halt immer auf dem Kopf. Da es aber eine gute Ausgewogenheit zur Frontlastigkeit der Meta Quest 3 darstellt, fällt das nicht unangenehm auf. Bei der ersten Verwendung des K4 Boost hat meine Meta Quest 3 ein Update durchgeführt. Ob das Zufall war oder durch den Erstanschluss ausgelöst wurde, weiß ich nicht. Die Wirkungsweise ist so, dass der Akku des K4 Boost permanent den internen Akku der Meta Quest nachlädt und bei 100% hält, so dass die grüne Ladestandsanzeige der Meta Quest 3 immer leuchtet. Erst wenn der Akku des K4 Boost erschöpft ist, wird der interne Akku der Meta Quest 3 geleert und die Füllstandanzeige im Display der Meta Quest 3 beginnt, abwärts zu zählen. Geladen wird das K4 Boost über eine auf den Produktfotos nicht ersichtliche USB C-Buchse an der Unterseite des Akkugehäuses. Den Platz für die Ladebuchse finde ich allerdings sehr suboptimal gewählt. Er ist nicht nur schlecht zugänglich, sondern bei mäßiger Beleuchtung auch schlecht sichtbar. Das ist allerdings mein einziger Kritikpunkt am neuen K4 Boost. Ein kleiner 90 Grad-USB C-Winkel, so eingesteckt, dass der Anschluss nach innen zum Kopf hin zeigt, wirkt Wunder und erleichtert den Zugang zur Ladebuchse ungemein. Das Laden erfolgt bei montiertem K4 Boost ausschließlich über diese hintere USB C-Buchse und geht mit einem separaten 65W USB-PD-Ladegerät sehr schnell. Während eine volle Aufladung der Meta Quest 3 vorher über die USB C-Buche am Headset 1h55min gebraucht hat, dauerte das Laden von Headset und K4 Boost zusammen über die hintere USB C-Buchse 2h45min, also nur 50min länger als die Meta Quest 3 allein. Ein erster Dauertest ergab eine Gesamtlaufzeit von 4h25min. Ich gehe aber davon aus, dass der Akku erst nach einigen Ladezyklen seine volle Kapazität ausschöpft, zumindest habe ich diesen Effekt auch beim internen Akku der Meta Quest 3 festgestellt. Deshalb denke ich, dass da noch etwas Luft nach oben ist. Für die meisten Nutzer eines VR-Headsets sollten viereinhalb Stunden ausreichend sein. Wer deutlich mehr braucht, sollte über das Topmodell der Marke BoboVR nachdenken, das mit wechselbaren 10000mAh-Akkus ausgestattet ist. Das ist allerdings nicht nur gewichtsmäßig, sondern auch preismäßig noch einmal eine ganz andere Kategorie, vor allem, wenn man Wechselakku und Ladeschale mit einrechnet. Noch ein Hinweis: Aufgrund des ausladenden Hinterkopfpolsters, das bei K4 und K4 Boost identisch ist und für den besonders angenehmen Sitz sorgt, ist das Hinterkopfende knapp 13cm hoch und somit passt die Meta Quest 3 damit leider nicht mehr in die meisten Transportboxen, die nur eine maximale Außenhöhe von 12cm haben, was sehr bedauerlich ist. Gerade die besonders stylische Box von AUBICA ist definitiv in Höhe und Breite deutlich zu klein geraten. Schade. Trotzdem halte ich die beiden neuen Kopfbänder der K4 Reihe für rundum gelungen. Schon das K4 glänzt durch exzellenten Tragekomfort bei geringem Gewicht, aber das K4 Boost ist in meinen Augen eine ganz besondere Empfehlung wert!
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